Docs: multi-realm current state

README quick start and configuration updated for init/serve split and
paskia.kantadb; API.md server-config endpoints replaced with admin realm
CRUD and the well-known webauthn endpoint; proxy guides point at the
realm auth-host setting; oidc.md documents per-realm issuers; MultiSite.md
rewritten from the implementation plan into documentation of the shipped
mechanics, policy model, and design rationale.
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2026-09-06 15:13:10 +00:00
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@@ -36,10 +36,11 @@ Paskia includes set of login, reauthentication and forbidden dialogs that it can
Install [UV](https://docs.astral.sh/uv/getting-started/installation/) and run:
```sh
uvx paskia --rp-id example.com
uvx paskia init --rp-id example.com
uvx paskia
```
On the first run it downloads the software and prints a registration link for the Admin. The server starts on [localhost:4401](http://localhost:4401), serving authentication for `*.example.com`. For local testing, leave out `--rp-id`.
The first command bootstraps the database and prints a registration link for the Admin. The second starts the server on [localhost:4401](http://localhost:4401), serving authentication for `*.example.com`. For local testing, leave out `--rp-id` (defaults to `localhost`).
For production you need a web server such as [Caddy](https://caddyserver.com/) to serve HTTPS on your actual domain names and proxy requests to Paskia and your backend apps (see documentation below).
@@ -51,22 +52,22 @@ uv tool install paskia
## Configuration
You will need to specify your main domain to which all passkeys will be tied as rp-id. Use your main domain even if Paskia is not running there. All other options are optional.
Bootstrapping is done once with `paskia init`; after that, `paskia` serves all configured realms from the database `paskia.kantadb` in the current directory. Realm configuration (rp-name, auth host, origins) is managed via the admin web interface, including adding further realms (rp-ids).
```text
paskia [options]
paskia init [options] # one-time bootstrap
paskia [-l endpoint] # serve
```
| Option | Description | Default |
| init option | Description | Default |
|--------|-------------|---------|
| -l, --listen *endpoint* | Listen address: *host*:*port*, :*port* (all interfaces), or */path.sock* | **localhost:4401** |
| --rp-id *domain* | Main/top domain for passkeys | **localhost** |
| --rp-name *"text"* | Branding name for the entire system (passkey auth, login dialog). | Same as rp-id |
| --origin *url* | Only sites listed can login (repeatable) | rp-id and all subdomains |
| -l, --listen *endpoint* | Listen address: *host*:*port*, :*port* (all interfaces), or */path.sock* (stored in the database) | **localhost:4401** |
| --rp-id *domain* | Main/top domain for passkeys. Repeatable and comma-separated for multiple realms; the first is the default realm | **localhost** |
| --rp-name *"text"* | Branding name of the default realm (passkey auth, login dialog) | Same as rp-id |
| --origin *url* | Only sites listed can login on the default realm (repeatable) | rp-id and all subdomains |
| --auth-host *url* | Dedicated authentication site, e.g. **auth.example.com** | Use **/auth/** path on each site |
| --save | Save current options to database | (only --rp-id required on further invocations) |
To clear a stored setting, pass an empty value like `--auth-host=`. The database is stored in `{rp-id}.paskiadb` folder in current directory. This can be overridden by environment `PASKIA_DB` if needed.
The `paskia` serve command accepts only `--listen` (overriding the stored value). An existing legacy `{rp-id}.paskiadb` database is converted to `paskia.kantadb` automatically on first serve.
## Tutorial: From Local Testing to Production
@@ -74,13 +75,14 @@ This section walks you through a complete example, from running Paskia locally t
### Step 1: Production Configuration
For a real deployment, configure Paskia with your domain name (rp-id). This enables SSO setup for that domain and any subdomains.
For a real deployment, bootstrap Paskia with your domain name (rp-id). This enables SSO setup for that domain and any subdomains.
```sh
uvx paskia --rp-id=example.com --rp-name="Example Corp"
uvx paskia init --rp-id=example.com --rp-name="Example Corp"
uvx paskia
```
This binds passkeys to the rp-id, allowing them to be used there or on any subdomain of it. The `--rp-name` is the branding shown in UI and registered with passkeys for everything on your domain (rp id). On the first run, you'll see a registration link—use it to create your Admin account. You may enter your real name here for a more suitable account name.
This binds passkeys to the rp-id, allowing them to be used there or on any subdomain of it. The `--rp-name` is the branding shown in UI and registered with passkeys for everything on your domain (rp id). Init prints a registration link—use it to create your Admin account. You may enter your real name here for a more suitable account name.
### Step 2: Set Up Caddy
@@ -177,20 +179,20 @@ curl -LsSf https://astral.sh/uv/install.sh | sudo env UV_INSTALL_DIR=/usr/local/
Create a systemd unit:
```sh
sudo systemctl edit --force --full paskia@.service
sudo systemctl edit --force --full paskia.service
```
Paste the following and save:
```ini
[Unit]
Description=Paskia for %i
Description=Paskia
[Service]
Type=simple
User=paskia
WorkingDirectory=/srv/paskia
ExecStart=uvx paskia@latest --rp-id=%i
ExecStart=uvx paskia@latest
[Install]
WantedBy=multi-user.target
@@ -199,7 +201,7 @@ WantedBy=multi-user.target
Run the service and view log:
```sh
sudo systemctl enable --now paskia@example.com && sudo journalctl -n30 -ocat -fu paskia@example.com
sudo systemctl enable --now paskia && sudo journalctl -n30 -ocat -fu paskia
```
### Optional: Dedicated Authentication Site
@@ -214,7 +216,15 @@ auth.example.com {
Now all authentication happens at `auth.example.com` instead of `/auth/` paths on your apps. Your existing protected sites continue to work as before but they just forward to the dedicated site for user profile and other such functionality.
Enter your auth site domain on Admin / Server Options panel or use `--auth-host=auth.example.com` when starting the server.
Set the auth host in the admin panel's Realms section, or pass `--auth-host=auth.example.com` to `paskia init` when bootstrapping.
## Multiple Realms and Related Origins
One Paskia instance can serve several realms (rp-ids) from the same database: users, orgs and permissions are shared, while passkeys are registered per realm. The master admin adds realms in the admin panel's Realms section; no restart is needed.
A realm can also allow passkey use on unrelated domains via WebAuthn [Related Origin Requests](https://passkeys.dev/docs/advanced/related-origins/) — add the origin to the realm and paskia serves the required `/.well-known/webauthn` declaration.
See [Multi-Site documentation](docs/MultiSite.md) for details.
## Further Documentation